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在分析测定中，测定结果通常都不是由直接测量而得，而往往是由两个或多个直接测量的物理量（如质量、体积等），按照一定的计算式计算得到的。我们知道，每个物理量的测量值均有误差，并以一定的途径传递积累起来而影响测定结果。误差的传递就是要讨论这些误差是如何反映到测?
In the analysis of measurement, the measurement results are usually not obtained by direct measurement, but often by two or more directly measured physical quantities (such as mass, volume, etc.), calculated according to a certain formula. We know that the measured value of each physical quantity is inaccurate, and is accumulated in a certain way and affects the measurement result. The transmission of error is to discuss how these errors are reflected in the measurement.